This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Temporarily blacklisted IP Address - try again later

  • 3 cavab
  • 0 have this problem
  • Last reply by david

more options

Pop up message: "Mozilla Thunderbird ESR Thunderbird Alert from account (my email address): Temporarily blacklisted IP Address - try again later" And the reason I do not believe it is a Comcast problem is that the message always contains the Thunderbird logo. Also if I avoid using my Thunderbird app and go directly to Comcast's website, I am able to log-in and read my emails with no problem. That tells me it is a Thunderbird/Mozilla problem. I've already tried changing the password to no avail. What else can I do?

Pop up message: "Mozilla Thunderbird ESR Thunderbird Alert from account (my email address): Temporarily blacklisted IP Address - try again later" And the reason I do not believe it is a Comcast problem is that the message always contains the Thunderbird logo. Also if I avoid using my Thunderbird app and go directly to Comcast's website, I am able to log-in and read my emails with no problem. That tells me it is a Thunderbird/Mozilla problem. I've already tried changing the password to no avail. What else can I do?
Attached screenshots

All Replies (3)

more options

No, it is not a Thunderbird problem. It is an IP blacklist, not a thunderbird blacklist. It may be due to content being sent. I suggest you contact Comcast on this.

Helpful?

more options

As I mentioned my email loads on my desktop when using other applications and there are no issues, content or otherwise when using Comcast's website all on the same computer and the same IP address. Likewise if I use my laptop to view my emails there are no issues and they load effortlessly. The problem is when using Thunderbird on my desktop and even then it is intermittent.

Helpful?

more options

First, I am not a network guru, but I will share what I know. When you access mail online, you are using the IP of the email provider. When you read mail on your PC, there are no security checks. BUT, when you send messages from your PC, the messages are being sent from your IP address, not Comcast's.

Helpful?

Sual ver

You must log in to your account to reply to posts. Please start a new question, if you do not have an account yet.